saucenao.files.filter

Complexity

Total Complexity

24

Size/Duplication

Total Lines	116
Duplicated Lines	0 %

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
F	Filter.apply()	0	60	19
A	Filter.__init__()	0	19	1
A	Filter._get_timestamp_from_datestring()	0	15	4

#!/usr/bin/python

This module should have a docstring.

# -*- coding: utf-8 -*-
import datetime
import os
import re
from pathlib import Path
from stat import ST_CTIME, ST_MTIME, ST_SIZE
from typing import Generator

Unable to import 'typing'

Unused Generator imported from typing

from saucenao.files.constraint import Constraint

Unused Constraint imported from saucenao.files.constraint

class Filter:

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    """

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    Filter to apply constraints for multiple metadata entries of the files.
    Obviously the files have to exist or they'll automatically get removed.
    Returns a generator object
    """

    def __init__(self, assert_is_folder=False, assert_is_file=False, creation_date=None, modified_date=None, name=None,

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                 file_type=None, size=None):
        """Initializing function

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        :type assert_is_folder: bool
        :type assert_is_file: bool
        :type creation_date: Constraint
        :type modified_date: Constraint
        :type name: Constraint
        :type file_type: Constraint
        :type size: Constraint
        """
        self.filter_assert_is_folder = assert_is_folder

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        self.filter_assert_is_file = assert_is_file

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        self.filter_creation_date = creation_date

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        self.filter_modified_date = modified_date

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        self.filter_name = name

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        self.filter_file_type = file_type

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        self.filter_file_size = size

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    @staticmethod

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    def _get_timestamp_from_datestring(date_string):

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        """Convert the given date string to timestamp

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        :param date_string:
        :return:
        """
        if re.match('\d+.\d+.\d+ \d+:\d+:\d+', date_string):

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            return datetime.datetime.strptime(date_string, "%d.%m.%Y %H:%M:%S").timestamp()

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        elif re.match('\d+.\d+.\d+ \d+:\d+', date_string):

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            return datetime.datetime.strptime(date_string, "%d.%m.%Y %H:%M").timestamp()

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        elif re.match('\d+.\d+.\d+', date_string):

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            return datetime.datetime.strptime(date_string, "%d.%m.%Y").timestamp()

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        else:

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            raise AttributeError("The date doesn't fit the format: d.m.Y[ H:M[:S]]")

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    def apply(self, directory='', file_system_objects=None):

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        """Apply the filter values to the given FSOs(File System Objects)

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        :type directory: str
        :type file_system_objects: list|tuple|Generator
        :return:
        """
        if file_system_objects is None:

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            if directory:

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                file_system_objects = os.listdir(directory)

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            else:

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                file_system_objects = []

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        for file_system_object in file_system_objects:

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            abs_path = os.path.join(directory, file_system_object)

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            # check if the FSO exists, else we can't access the metadata
            if not os.path.exists(abs_path):

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                continue

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            # check if the FSO is a file
            if self.filter_assert_is_file and not os.path.isfile(abs_path):

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                continue

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            # check if the FSO is a folder
            if self.filter_assert_is_folder and not os.path.isdir(abs_path):

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                continue

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            file_stats = os.stat(abs_path)

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            # check if the FSO creation date matches the constraint
            if self.filter_creation_date:

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                creation_time = file_stats[ST_CTIME]

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                expected_creation_time = self._get_timestamp_from_datestring(self.filter_creation_date.value)

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                if not self.filter_creation_date.cmp_func(creation_time, expected_creation_time):

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                    continue

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            # check if the FSO modification date matches the constraint
            if self.filter_modified_date:

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                modified_time = file_stats[ST_MTIME]

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                expected_modified_time = self._get_timestamp_from_datestring(self.filter_modified_date.value)

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                if not self.filter_modified_date.cmp_func(modified_time, expected_modified_time):

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                    continue

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            # check if the FSO name matches the constraint
            if self.filter_name:

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                if not self.filter_name.cmp_func(file_system_object, self.filter_name.value):

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                    continue

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            # check if the FSO suffix matches the constraint
            if self.filter_file_type:

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                if not self.filter_file_type.cmp_func(Path(abs_path).suffix, self.filter_file_type.value):

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                    continue

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            # check if the FSO size matches the constraint
            if self.filter_file_size:

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                if not self.filter_file_size.cmp_func(file_stats[ST_SIZE], self.filter_file_size.value):

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                    continue

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            yield file_system_object

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